If you are not sure which language to learn, then here are some factors to consider before starting your learning journey
If you want to learn a new language with a huge number of speakers in many countries, the ones you should select in order to the usefulness of the language are: English, Spanish, Arabic, Chinese (Mandarin), Japanese, Portuguese, and Hindi/Urdu. Based on the number of speakers or the population of countries or the languages are spoken, and the major fields using the languages internationally, the language can be learned.
Now let us see whether Arabic or Chinese or Japanese language you should select to learn
If you want to learn a language with a large number of speakers and which is spoken in many countries, then all these languages Arabic, Chinese (Mandarin), and Japanese are taken into account. Among these languages, Chinese has the highest number of native speakers and population of countries where the languages are spoken of about 1,030 million. The number of fields using the languages internationally, and the best economic power is seen in China.
Each language has a different set of challenges. Few languages might have complex inflectional systems, complex writing systems, difficult spelling systems, the more a language differs from the native languages you know, the harder it is to learn. For unpopular-studied languages, it can be hard to find language learning materials and courses. Many languages are have never been written, so training in the field of linguistics is needed in order to acquire them.
For English speakers, the easier languages are Italian, Spanish, French, German, Portuguese, Romanian, Swedish, and Danish. Arabic, Japanese, and Chinese are often considered difficult languages to learn for English speakers and also for speakers of other European languages. Learning to read and write, tones of Chinese and Japanese will be difficult to master.
Complex phonology and syntax
Some of the languages present you with even more challenges. Some indigenous languages of the Americas have complex phonology and syntax, small speaker communities, and few materials and resources to help you learn them. But among the three languages, Chinese grammar is relatively straightforward, compared to other languages.
Languages in demand by employers
If you want to learn a language to improve your employment prospects then choose the language that is in demand by employers across the world. Chinese is considered one of the popular languages and many are learning this language. After Chinese Japanese is considered the popular language. The demand for people who is having knowledge of the Arabic language is high.
Simply learn the language that meets your demand in your career.
Learning Arabic or Chinese or Japanese will give you opportunities across the world. Only a few people across the world will learn Arabic. Many countries such as the United States of America are searching for fluent speakers of Arabic. There are many job opportunities in many sectors such as translation, finance, education, and businesses. Some of the platforms like Multibhashi offer online classes that allow you to learn Arabic or Chinese or Japanese from anywhere in the world, build your language learning by joining your classes now. All the best!!